The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 24, 2026
Filed:
Jun. 24, 2024
Agilent Technologies, Inc., Santa Clara, CA (US);
Giovanni Iannucci, Casserta, IT;
Giuseppe De Palma, Turin, IT;
Andrea Lepore, Cassino, IT;
Simone Cau, Settimo Torinese, IT;
Cristiano Bruno, Settimo Torinese, IT;
Claudio Caputo, Turin, IT;
Vito Apicella, Settimo Torinese, IT;
Agilent Technologies, Inc., Santa Clara, CA (US);
Abstract
A vacuum pumping system includes an oil-lubricated rotary vacuum pump, an electric motor driving the pump and a gas ballast arrangement supplying the pump with gas and fluidically coupled with the motor for sucking oil, leaked from the pump into the motor, back into the pump. The fluidic coupling is achieved by means of a leaked oil recovery unit that is housed in a region of an internal chamber of the motor where ballast gas and leaked oil are present and that establishes communication between the region of the internal chamber of the motor and the pumping chamber.